Question

(a) Give an example of an oxidation reaction.
(b) Is oxidation an exothermic or an endothermic reaction?
(c) Explain, by giving an example, how oxidation and reduction proceed side by side.

Answer 1

Answer:

1. CuO + H2 ➡️Cu + H2O
2. Oxidation reaction can be endothermic or exothermic. Exothermic: combustion of hydrocarbons, thermite rxn, burning a reactive metal for example sodium in air. Endothermic: burning a less reactive metal in air. mostly oxidation reaction is exothermic.
3. CuO + H2 ➡️Cu + H2O. Here, copper gets reduced while hydrogen gets oxidised by gaining oxygen from the Copper Oxide.

Answer 2

Answer:

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